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pip5678 · 3rd May 2019, 5:13 pm

Confusing! As mentioned in #7 the transmitter is part of the loop required to get dial tone or trip the ringing so you may still have a wiring issue. Diagram N412 refers to the 312 not N432 which is for the 332 telephone and is configured differently. There is a springset within the dial that short out the receiver when the dial is off normal to prevent pulsing in the receiver, there could be an issue here and there is a diaphragm in the receiver isn't there?

3rd May 2019, 5:13 pm	#16
pip5678 Pentode Join Date: Jan 2019 Location: Manchester, UK. Posts: 163	Re: 312L Conversion Confusing! As mentioned in #7 the transmitter is part of the loop required to get dial tone or trip the ringing so you may still have a wiring issue. Diagram N412 refers to the 312 not N432 which is for the 332 telephone and is configured differently. There is a springset within the dial that short out the receiver when the dial is off normal to prevent pulsing in the receiver, there could be an issue here and there is a diaphragm in the receiver isn't there?